Title :
Detection of Ammonia Using Shear Horizontal Surface Acoustic Wave Resonators
Author :
Shen, Chi-Yen ; Hsu, Cheng-Liang ; Wang, De-Lu
Author_Institution :
I-Shou Univ., Kaohsiung
Abstract :
A shear horizontal surface acoustic wave (SH-SAW) sensor coated with the polyaniline (PANI) film was investigated in this study. The frequency shift of the SH-SAW was measured for detecting ammonia. In addition, the temperature effect was discussed in order to find a suitable temperature of operation. The SH-SAW sensor in this study could immediately respond the concentration of ammonia gas and showed a linear response. This sensor presented a sensitivity of 0.21 ppm/ppm at 23degC.
Keywords :
ammonia; gas sensors; polymer films; surface acoustic wave sensors; NH3; SH-SAW sensor; ammonia; frequency shift; polyaniline film; shear horizontal surface acoustic wave resonators; temperature 23 degC; Acoustic signal detection; Acoustic waves; Chemical sensors; Electromechanical sensors; Frequency; Gas detectors; Optical films; Optical resonators; Surface acoustic waves; Temperature sensors;
Conference_Titel :
Applications of Ferroelectrics, 2007. ISAF 2007. Sixteenth IEEE International Symposium on
Conference_Location :
Nara
Print_ISBN :
978-1-4244-1334-8
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2007.4393394
